389 Breather Drain and Locknut
Certification Details
Increased Safety Exe I Mb, Exe IIC Gb, Extb IIIC Db, 
I M2/II 2GD.
Baseefa Certificate No. Baseefa11ATEX0153X.
IECEx Certificate No. IECEx BAS 11.0075X.
Operating Temperature Range: Nitrile ‘O’ Ring fitted as standard -60°C to +80°C.
Silicone Option -60°C to +160°C.
Group I, II and III.
Alternative certification options available:
Certificate No. CEPEL 13.2199X.
GOST R POCC GB 05 B03785.
General Information
Manufactured in Brass, Nickel Plated Brass, Stainless Steel – Grade 316L. O Ring manufactured from Silicone Rubber.
M20 and M25 with 1.5mm pitch as standard.
Longer thread lengths are available on request.
Suitable for use in Zone 1, Zone 2, Zone 21, Zone 22 and mining applications.
Construction and Test Standards: IEC/EN 60079-0, IEC/EN 60079-7 and IEC/EN 60079-31.
Ingress Protection: IP66.
| 389 BREATHER DRAIN SELECTION TABLE | |||
|---|---|---|---|
| Thread Size | Length of Thread | Across Flats | Across Corners |
| M20 | 15 | 30 | 32.5 |
| M25 | 15 | 36 | 39.5 |
| All dimensions in millimetres. | |||
Ordering Information
Breather Drain Type/Thread Size/Pitch/Material/Finish
e.g. 389/M25/1.5mm/Brass/Nickel Plated
